Avaya DEFINITY Server R Manual page 283

Interconnect Port Networks with Fiber Optic Cabling
Standard Reliability
Fiber optic cabling terminated to 9823A lightwave transceivers can interconnect
PNs up to 4,900 feet (1493 m) apart. Fiber optic cabling terminated to 9823B
lightwave transceivers can interconnect PNs up to 25,000 feet (7620 m) apart.
The 300A fiber optic lightwave transceiver can interconnect PNs up to
115,000 feet (21.7 miles, 35 km) apart.
NOTE:
These distance limits are approximate measurements of the actual fiber
right-of-way (not of the shortest linear distance) between the 2 endpoints.
NOTE:
It is important to label every cable that you install.
NOTE:
Keep track of which fiber attaches to which connector on each lightwave
transceiver. This section provides figures offering suggested ways of making
these connections.
The connectors on the lightwave transceivers are labeled either "TX"
(transmit) or "RX" (receive), while the fibers attaching to each connector are
numbered either "1" or "2." A viable fiber connection is only made when both
fibers in each cable ("1" and "2") route from the "TX" connector of a port
network to the "RX" connector of its adjacent port network. See
NOTE:
When finished, refer to
administer the fiber links.
Collocated Port Networks
For a standard reliability system with 1 collocated EPN, use 1 fiber optic cable and
2 lightwave transceivers to directly connect the networks.
For a standard reliability system with 2 collocated EPNs, use 3 fiber optic cables
and 6 lightwave transceivers to directly connect the networks.
NOTE:
Based on floor-plan considerations, the length of these cables may vary.
20 foot (6.1 m) cables are normally adequate for 2 port networks.
For collocated cabinets, route the fiber optic cables directly from the PPN to the
EPN cabinet. If a "DEFINITY style" PPN cabinet is collocated with another
"DEFINITY style" EPN cabinet, the preferred routing is to run the cables up the
cable tray and out the top of the PPN cabinet. The cables are then run to the other
cabinet, through the top of the cabinet, and down the cable tray to the desired
carrier level.
555-233-115
Appendix A, ''Fiber Link Administration''
Issue 7 November 2003
Figure 5-16.
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